Server type

1. Desktop servers are also called "tower servers". Some desktop servers use chassis roughly the same size as ordinary vertical computers, and some use large capacity chassis, like a huge cabinet. Due to the weak function of low-grade servers, the internal structure of the whole server is relatively simple, so the chassis is small, and desktop chassis structure is adopted. The desktop introduced here is not the desktop of ordinary computers, and the vertical chassis also belongs to the scope of desktop computers. This kind of server occupies a considerable share in the whole server market.

2. The rack server looks like a switch rather than a computer. It has 1U (1U = 1.75 inches), 2U, 4U and other specifications. Rack mounted servers are installed in standard 19 inch cabinets. Most of the servers with this structure are functional servers.

3. In some high-end enterprise servers, due to the complex internal structure and more internal equipment, some also have many different equipment units or several servers are placed in one cabinet. This kind of server is cabinet server.
4. Blade server is a low-cost server platform of hahd (high availability, high density). It is specially designed for special application industries and high-density computer environment. Each "blade" is actually a system motherboard, similar to independent servers. In this mode, each motherboard runs its own system and serves different specified user groups, which are not associated with each other. However, you can use the system software to assemble these motherboards into a server cluster. In the cluster mode, all motherboards can be connected to provide a high-speed network environment, share resources and serve the same user group. At present, there are two types of blade servers in the market: one is mainly designed for the telecommunications industry, and the interface standards and dimensions comply with PICMG (PCI industrial computer manufacturer's group) 1. X or 2. X. in the future, products conforming to PICMG 3. X will be launched. Blades and cabinets of different manufacturers adopting the same standard can be compatible with each other in theory; The other is general computing design. The above standards or manufacturer's standards may be adopted for the interface, but the size and specification are determined by the manufacturer, focusing on the performance price ratio. Most products belong to this category. Blade servers are best suited for cluster computing and IXP to provide Internet services.